Date: Mon, 09 Oct 2000 16:21:02 +0200 From: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/fs/devfs devfs_devs.c devfs_vfsops.c devfs_vnops.c Message-ID: <65531.971101262@critter> In-Reply-To: Your message of "Mon, 09 Oct 2000 07:18:08 PDT." <200010091418.HAA78652@freefall.freebsd.org>
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> Implement first cut try at killing cloned devices when they are > not needed anymore. For now only the bpf driver is involved in > this experiment. Cloned devices can set the SI_CHEAPCLONE flag > which allows us to destroy_dev() it when the vcount() drops to zero > and the vnode is reclaimed. For now it's a requirement that the > driver doesn't keep persistent state from close to (re)open. I'm kind of hessitant to add another function to the cdevsw[] to handle device destruction, but if anybody can come up with a decent reason why a (cloning) pseudo driver would store persistent data after last close, I'll reconsider. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD coreteam member | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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